ASTROSAT CZTI

Data Quality Report

Orbit 39666

Creation date: 2024-06-27T22:07:30.286173
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_051T01_9000005490_39666cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39666cztM0_level2_quad_clean.evt
Size (bytes)568,644,48077,535,360
Size542.3 MB 73.9 MB
Events in quadrant A4,788,029525,922
Events in quadrant B2,627,616600,694
Events in quadrant C7,529,014438,189
Events in quadrant D5,713,019428,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175083
B0112252
C0258752
D0205482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505760011.864742%
B5057761.502867%
C5057141928.060115%
D5057100019.774570%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7119 5058 643 643 9.03% 12.71%
B 7119 5058 41 41 0.58% 0.81%
C 7119 5058 1306 1306 18.35% 25.82%
D 7119 5058 1013 1013 14.23% 20.03%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 222 2177593 19758.98 542 532 110.2
A 10 83 415638 3767.5 542 532 110.2
A 15 174 70507 635.09 542 532 110.2
B 5 172 186158 1718.32 556 540 108.0
B 5 255 172740 1594.11 556 540 108.0
B 15 32 24683 223.5 556 540 108.0
C 15 208 4835076 42552.17 485 489 113.6
C 9 187 525335 4619.49 485 489 113.6
C 15 214 204890 1799.06 485 489 113.6
D 13 174 2402717 19517.22 499 486 123.1
D 12 233 786501 6386.07 499 486 123.1
D 12 227 370166 3003.51 499 486 123.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter